Carbon nanotubes as photoprotectors of organic dyes: reversible photoreaction instead of permanent photo-oxidation.
(2011) In Physical chemistry chemical physics : PCCP 13. p.5771-5777- Abstract
- In this paper we report that single-walled carbon nanotubes (SWNTs) can protect surface adsorbed Rhodamine B (RhB) molecules from permanent photo-oxidation via a reversible reaction. Upon strong light irradiation at 514 nm, the SWNT-adsorbed RhB molecules were switched to a non-fluorescent form, which looked like ordinary bleaching behavior. However, after staying without light for several hours the non-fluorescent dye species turned back to the original fluorescent form. This on/off switching can be considered as a reversible photobleaching process of the dye molecules. Other irreversible photochemical pathways of RhB were strongly prohibited due to the presence of SWNTs, providing the dye molecules with a high resistance against... (More)
- In this paper we report that single-walled carbon nanotubes (SWNTs) can protect surface adsorbed Rhodamine B (RhB) molecules from permanent photo-oxidation via a reversible reaction. Upon strong light irradiation at 514 nm, the SWNT-adsorbed RhB molecules were switched to a non-fluorescent form, which looked like ordinary bleaching behavior. However, after staying without light for several hours the non-fluorescent dye species turned back to the original fluorescent form. This on/off switching can be considered as a reversible photobleaching process of the dye molecules. Other irreversible photochemical pathways of RhB were strongly prohibited due to the presence of SWNTs, providing the dye molecules with a high resistance against permanent photodegradation. By determining the maximum number of reconvertable RhB molecules per unit length of the nanotubes, we have further proved that this effect only works for the first layer of adsorbed dye molecules on the SWNT surfaces. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1831840
- author
- Long, Dewu LU ; Lin, Hongzhen LU and Scheblykin, Ivan LU
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical chemistry chemical physics : PCCP
- volume
- 13
- pages
- 5771 - 5777
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000288447100035
- pmid:21321723
- scopus:79952722116
- pmid:21321723
- ISSN
- 1463-9084
- DOI
- 10.1039/c0cp02764b
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- 3ea9f816-3bf6-4936-8307-33b2f67ea7b2 (old id 1831840)
- date added to LUP
- 2016-04-01 13:12:55
- date last changed
- 2023-09-16 20:55:05
@article{3ea9f816-3bf6-4936-8307-33b2f67ea7b2, abstract = {{In this paper we report that single-walled carbon nanotubes (SWNTs) can protect surface adsorbed Rhodamine B (RhB) molecules from permanent photo-oxidation via a reversible reaction. Upon strong light irradiation at 514 nm, the SWNT-adsorbed RhB molecules were switched to a non-fluorescent form, which looked like ordinary bleaching behavior. However, after staying without light for several hours the non-fluorescent dye species turned back to the original fluorescent form. This on/off switching can be considered as a reversible photobleaching process of the dye molecules. Other irreversible photochemical pathways of RhB were strongly prohibited due to the presence of SWNTs, providing the dye molecules with a high resistance against permanent photodegradation. By determining the maximum number of reconvertable RhB molecules per unit length of the nanotubes, we have further proved that this effect only works for the first layer of adsorbed dye molecules on the SWNT surfaces.}}, author = {{Long, Dewu and Lin, Hongzhen and Scheblykin, Ivan}}, issn = {{1463-9084}}, language = {{eng}}, pages = {{5771--5777}}, publisher = {{Royal Society of Chemistry}}, series = {{Physical chemistry chemical physics : PCCP}}, title = {{Carbon nanotubes as photoprotectors of organic dyes: reversible photoreaction instead of permanent photo-oxidation.}}, url = {{http://dx.doi.org/10.1039/c0cp02764b}}, doi = {{10.1039/c0cp02764b}}, volume = {{13}}, year = {{2011}}, }